Machine for covering flat wire



MACHINE FOR COVERING FLAT APPLICATION FILED APR. 30. 1903. N 0 K O D E L2 S H E E T S S H E B T 1.

PATENTED JAN. 5, 1904 LC. ANDERSON.

MACHINE FOR COVERING PLAT WIRE. 7

APPLICATION mum APR. 30. 1903'.

' 2 SHEETS sum. 2

Z w w UNITED STATES Patented january 5, 1904.

PATENT OFFICE.

JAMES C. ANDERSON, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO VARLEY DUPLEXMAGNET COMPANY, A CORPORATION OF NEW JERSEY.

MACHINE FOR COVERING FLAT WIRE.

, SPECIFICATION forming part of Letters Patent No. 748,911, datedJanuaryfi, 1904. Application filed April 30. 1903. Serial No. 154,921.(No model.)

To all whom it may concern:

Be it known that I, JAMES C. ANDERSON, a citizen of the United States,residing at J ersey City, in the county of Hudson and State of NewJersey,have invented certain new and useful Improvements in Machines forCovering Flat Wire, of which the followingis a full, clear, and exactdescription.

This invention .is a machine for insulating or covering electricalconductors, more particularly for covering conductors of flat or ribbonform.

The machine consists, essentially, of rolls and folding-dies for firstforming the insulating material, which is in the form of a strip ofsuitable fabric, into a closed envelop, in combination with devices foropening the envelop, inserting the flat wire, and thereafter closing theenvelop upon the-wire.

This machine will now be described in detail with reference to theaccompanying strip :0 is somewhat wider than the flat wire,"

being substantially twice the width thereof,

so that it may nearly cover the metal when it is folded around it Bothstrips are supposed to lead from a reel to the covering-machineillustrated. At the front of the machine is a pair of rolls a a. Theupper roll is provided with a smooth periphery flanked on each edge byflanges a which just admit the strip 00. Roll a is provided with twoannular ridges 0?, located at equal distances from the edges andseparated by a space substantially equal to the width of the wire. Thetwo rolls are connected together by gearing a and the lower roll is hungat the free end of one or more crank-arms a acted upon by a spring a inorder to press the lower roll constantly Figs. 8, 4, 5, and 6 arecross-secagainst the upper roll. b and b are another pair of rolls,similarly geared together and mounted to create pressure between them.The abutting surfaces of these rolls are smooth, as indicated in Fig. 4.Both of the rolls a and b are driven from the main gear 0, to whichpower is applied in any suitable manner. In line with the contact-pointsof both pairs of rolls and between them is ararranged afolding-die,consisting of two main partse and f, so arranged withrespect to each other as to form an elongated passage-way through whichthe strip a: is to pass. The shape of this passage-way gradually changesfrom one end to the other, as indicated by Fig. 2,which shows sectionsof the die taken at the five different points 1, 2, 3, 4:, and 5. Beyondthe rolls b and b is arranged a table g,above which is hung aguide-sheave h for the flat wire y. Between the table and the sheave isa space partially occupied bytwo triangular wedge-shaped blocks i; andj. The apex of block i points forward, while that of block j pointsrearward. The lower surface of each block is substantially parallel tothe surface of the table g and slightly above it, so that the paperstrip can pass under the blocks. The adjoining ends of the blocks areseparated to permit the wire y to pass tangentially from the sheave hbeneath the block 3'. At the rearof the machine are mounted two otherrolls k and 7a, which are pressed toward each other by a mountingsimilar to .those previously described.

The operation of the machine is as follows:

The strip of paper or other material for insulating or covering the wireis first led through the rolls wand 01,", where two lines of scoring areformed on its under side, the fiber of the folded inward. and downwardtoward the body of the strip, as shown in section 5 of Fig. 5. Thenemerging from the die the folded strip leads onward to the two plainpressurerollers 12 and b, which press or iron the folds and fixes orsets them. The strip then leads between the triangular block '5 and thetable g, the body of the strip passing under the block, while the foldededges are lifted into a right-angular position by the nose of the block.Leading on in this shape the open strip or envelop is presented to thespace between the two blocks, where the wire y can then pass into thespace between the raised edges of the strip and accompany the strip inits passage beneath the block j. Leaving the blockj the natural tendencyof the edges of the strip to fold downward is exerted, and the wire isthus covered. Immediately, however, the covered wire passes between thefinal pressing-rolls 7c and 7a, where the strip is again set to morefirmly embrace the wire. The covered Wire finally leads to a suitablestoring-reel Z. In this operation it will be seen that the closedenvelop is first formed with a seam extending longitudinally, afterwhich the envelop is opened and the wire inserted, and finally theenvelop is closed upon the Wire.

Having described my invention, I claim 1. In a machine for covering orinsulating fiat wire, the combination of,means for folding the lateraledges of a strip into a closed envelop, means for opening the enveloplongitudinally, means for inserting the wire in the open envelop andmeans for thereafter closing the envelop, substantially as described.

2. In a machine for covering or insulating wire, the combination ofmeans for folding the lateral edges of a strip of covering material andmeans for thereafter inserting a wire beneath the folds of the strip,substantially as described.

3. In a machine for covering or insulating flat wire, the combination ofa folding-die adapted to fold the lateral edges of a strip of coveringmaterial, a device for opening said folds and means for inserting thewire beneath the-open folds and again closing the folds.

4. In a machine for covering or insulating flat wire, the combination ofmeans for longitudinally scoring the strip of covering material, a dieadapted to fold the strip along the scored lines, triangular blocksadapted to pass under and between the folds to open them, a guideadapted to direct the wire be- .neath the open folds and means forfinally folding the strip upon the wire.

5. In a machine for covering or insulating flat wire, the combination ofa pair of rolls, one of which is provided with ridges adapted tolongitudinally score the covering-strip, a die adapted to fold the stripalong the scored lines, another pair of rolls adapted to press thefolded strip and means for opening the folds and inserting the wire inthe strip, substantially as described.

In witness whereof I subscribe my signature in presence of twowitnesses.

JAMES C. ANDERSON.

Witnesses:

FRANK S. OBER, WALDO M. OHAPIN.

